Drop support for Python 3.8 (#236)

As it is now end of life.

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3

CHANGELOG.rst

@@ -5,7 +5,7 @@ latest
 ------
 
 * Add support for wildcards in forbidden and independence contracts.
-
+* Drop support for Python 3.8.
 
 2.0 (2024-1-9)
 --------------

pyproject.toml

@@ -10,7 +10,7 @@ description = "Enforces rules for the imports within and between Python packages
 authors = [
     {name = "David Seddon", email = "david@seddonym.me"},
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dependencies = [
     "click>=6",
     "grimp>=3.2",
@@ -25,7 +25,6 @@ classifiers = [
     "Operating System :: POSIX",
     "Operating System :: Microsoft :: Windows",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",

tox.ini

@@ -4,12 +4,11 @@ envlist =
     clean,
     check,
     docs,
-    py38,py39,py310,py311,py312
+    py39,py310,py311,py312
     report
 
 [testenv]
 basepython =
-    py38: {env:TOXPYTHON:python3.8}
     py39: {env:TOXPYTHON:python3.9}
     py310: {env:TOXPYTHON:python3.10}
     py311: {env:TOXPYTHON:python3.11}
@@ -64,7 +63,6 @@ deps = coverage
 [gh-actions]
 # Run check on both Python 3.10 and 3.11, because of our version-dependent dependency on tomli.
 python =
-    3.8: py38, report
     3.9: py39, report
     3.10: py310, report, check
     3.11: py311, report, check, docs